In the course of research for the Lian Li PE-750 review, I ending up checking the UL manufacturer directory listing for SilverStone and noticed references to a SX800-LTI. As I went over in the SX700-LPT review, according to SilverStone's current SFF PSU nomenclature, the "SX800-LTI" model number translates to a 800W SFX-L Titanium-rated fully-modular power supply.
Curious if this was real I contacted Tony Ou, SilverStone's marketing manager, and even though he's busy with Computex, he replied that it is indeed real, they announced it today, and it will (hopefully) be available in Q4 this year!
Read more here.
Dec 28 Update: Review here